大约有 47,000 项符合查询结果（耗时：0.0595秒） [XML]
How do you query for “is not null” in Mongo?
...: 1 }
{ "_id" : ObjectId("544540f11b5cf91c4893eb99"), "otherField" : 2 }
Now, create the sparse index on imageUrl field:
db.foo.ensureIndex( { "imageUrl": 1 }, { sparse: true } )
{
"createdCollectionAutomatically" : false,
"numIndexesBefore" : 1,
"numIndexesAfter" : 2,
"ok" : 1
}
...
Authorize Attribute with Multiple Roles
...
Now that's an idea worthy of Mac Gyver ;)
– Christian Sauer
Jun 12 '14 at 10:47
2
...
Removing whitespace between HTML elements when using line breaks
...n the images will be 0 in width, and the images won't be affected.
Don't know if this works in all browsers, but I tried it with Chromium and some <li> elements with display: inline-block;.
share
|
...
How to set cookie in node js using express framework?
... the latter by calling next() when the cookie has been set.
Update
As of now the cookie parser is a seperate npm package, so instead of using
app.use(express.cookieParser());
you need to install it separately using npm i cookie-parser and then use it as:
const cookieParser = require('cookie-p...
android get real path by Uri.getPath()
...lver.openInputStream() allow you to access the contents of a file without knowing its real path.
share
|
improve this answer
|
follow
|
...
Catch multiple exceptions in one line (except block)
I know that I can do:
5 Answers
5
...
Is there a vim command to relocate a tab?
...; :call TabMove(-1)<CR>
map <F10> :call TabMove(1)<CR>
Now you can move your current tab by pressing F9 or F10.
share
|
improve this answer
|
follow
...
Windows git “warning: LF will be replaced by CRLF”, is that warning tail backward?
...en using core.autocrlf, the bogus "LF
will be replaced by CRLF" warning is now suppressed.
As quaylar rightly comments, if there is a conversion on commit, it is to LF only.
That specific warning "LF will be replaced by CRLF" comes from convert.c#check_safe_crlf():
if (checksafe == SAFE_CRLF_WA...
are there dictionaries in javascript like python?
...l Map object (i.e. "There are no real associative arrays in Javascript" is now incorrect).
– robocat
Oct 4 '16 at 22:29
add a comment
|
...
What is an efficient way to implement a singleton pattern in Java? [closed]
...s to be final. In this case, I've used the final keyword to let the users know it is final. Then you need to make the constructor private to prevent users to create their own Foo. Throwing an exception from the constructor prevents users to use reflection to create a second Foo. Then you create a pr...